<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>转化 NodeList 集合</title>
</head>
<body>
    <script>
        // NodeList 对象
        let ps = document.querySelectorAll('p');
        let ps2 = Array.from(ps);
        console.log(ps2);
    </script>
</body>
</html>